Public Water System: D.c. Water And Sewer Authority
MyTapWater.org's tap water quality report is the compilation of data collected from federal, state, and local government agencies, most prominently the EPA. We strive to populate the report with the latest data concerning water contaminants, lead and copper levels, and water quality violations. We only collect drinking water data from public water systems.
PWS Service Information
PWS ID: DC0000002 Type: Community water system EPA Region: 03
Primary Service Area: Residential Area
Primary Source: Surface water purchased
Population Served: 632,323
Contact Information KIELY, CHARLES KIELY, CHARLES 80 M Street, NE WASHINGTON, DC 20003
This public water system services 1 zip code in 1 municipality in 1 county.
Summary Results
A summary view of the the times a water contaminant was tested and found to exceed the level set by the EPA (the MCL).
This a view of violations of maximum contaminant levels. In the expanded view you can see each know test date for a given contaminant, the result of the test, the minimum level that can be recognized in a test (MRL), and upper limit that is considered healthy (HRL).
Lead and copper are recorded separately from other contaminants because of the Lead and Copper Rule. As with all other results, these are the findings at the water supply. Lead and copper can be — and often are — added to drinking water in between the water facility and a tap.
Sample ID
Contaminant
Sampling Start Date
Sampling End Date
Result
DC140
lead
2017-01-01
2017-06-30
0.003mg/L
DC134
lead
2016-07-01
2016-12-31
0.0034mg/L
DC126
lead
2016-01-01
2016-06-30
0.002mg/L
DC123
lead
2015-07-01
2015-12-31
0.004mg/L
DC111
lead
2015-01-01
2015-06-30
0.002mg/L
DC105
lead
2014-07-01
2014-12-31
0.004mg/L
DC103
lead
2014-01-01
2014-06-30
0.002mg/L
DC101
lead
2013-07-01
2013-12-31
0.0055mg/L
DC92
lead
2013-01-01
2013-06-30
0.004mg/L
DC90
lead
2012-07-01
2012-12-31
0.004mg/L
DC84
lead
2012-01-01
2012-06-30
0.003mg/L
DC82
lead
2011-07-01
2011-12-31
0.005mg/L
DC81
lead
2011-01-01
2011-06-30
0.005mg/L
DC79
lead
2010-07-01
2010-12-31
0.009mg/L
DC61
lead
2010-01-01
2010-06-30
0.007mg/L
DC77
lead
2010-01-01
2010-06-30
0.007mg/L
DC53
lead
2009-07-01
2009-12-31
0.007mg/L
DC57
lead
2009-01-01
2009-06-30
0.006mg/L
DC55
lead
2008-07-01
2008-12-31
0.008mg/L
DC47
lead
2008-01-01
2008-06-30
0.007mg/L
Violations
Known violations of the Safe Drinking Water Act as recorded by the EPA.
Compliance Dates
Rule
Violation Type
Contaminant Name
Status
2006-01-01 - 2006-03-31
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting (DBP)
Chloramine
Returned to Compliance
2004-10-01 - 2004-12-31
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting (DBP)
Total Haloacetic Acids (HAA5)
Returned to Compliance
2004-10-01 - 2004-12-31
Stage 1 Disinfectants and Disinfection Byproducts Rule
Monitoring and Reporting (DBP)
TTHM
Returned to Compliance
2004-09-01 - 2004-09-30
Total Coliform Rule
Maximum Contaminant Level Violation, Monthly (TCR)
Coliform (TCR)
Returned to Compliance
1996-08-01 - 1996-08-31
Total Coliform Rule
Maximum Contaminant Level Violation, Monthly (TCR)
Coliform (TCR)
Returned to Compliance
1996-07-01 - 1996-07-31
Total Coliform Rule
Maximum Contaminant Level Violation, Monthly (TCR)
Coliform (TCR)
Returned to Compliance
1996-06-01 - 1996-06-30
Total Coliform Rule
Maximum Contaminant Level Violation, Monthly (TCR)
Coliform (TCR)
Returned to Compliance
1995-12-01 - 1996-01-15
Miscellaneous
Notification, Public
-
Returned to Compliance
1995-11-01 - 1995-11-30
Miscellaneous
Notification, Public
-
Returned to Compliance
1995-11-01 - 1995-11-30
Total Coliform Rule
Maximum Contaminant Level Violation, Acute (TCR)
Coliform (TCR)
Returned to Compliance
1995-10-01 - 1995-10-31
Total Coliform Rule
Maximum Contaminant Level Violation, Monthly (TCR)
Coliform (TCR)
Returned to Compliance
1995-10-01 - 1995-10-31
Miscellaneous
Notification, Public
-
Returned to Compliance
1995-06-01 - 1995-06-30
Total Coliform Rule
Maximum Contaminant Level Violation, Acute (TCR)
Coliform (TCR)
Returned to Compliance
1993-09-01 - 1993-09-30
Total Coliform Rule
Maximum Contaminant Level Violation, Acute (TCR)
Coliform (TCR)
Returned to Compliance
1993-09-01 - 1993-09-30
Total Coliform Rule
Maximum Contaminant Level Violation, Monthly (TCR)
Coliform (TCR)
Known
2003-07-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
2000-07-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
1998-07-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
1999-01-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
2004-10-01 - N/A
Lead and Copper Rule
Lead Service Line Replacement (LSLR)
Lead and Copper Rule
Returned to Compliance
1999-07-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
2003-10-01 - N/A
Consumer Confidence Rule
Consumer Confidence Report Inadequate Reporting
Consumer Confidence Rule
Returned to Compliance
2001-07-01 - N/A
Lead and Copper Rule
Lead Service Line Replacement (LSLR)
Lead and Copper Rule
Returned to Compliance
2001-07-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
2001-07-01 - N/A
Lead and Copper Rule
Public Education
Lead and Copper Rule
Returned to Compliance
2003-01-01 - N/A
Lead and Copper Rule
Follow-up Or Routine LCR Tap M/R
Lead and Copper Rule
Returned to Compliance
2002-10-01 - N/A
Lead and Copper Rule
Public Education
Lead and Copper Rule
Returned to Compliance
2002-10-01 - N/A
Lead and Copper Rule
Lead Service Line Replacement (LSLR)
Lead and Copper Rule
Returned to Compliance
2005-07-01 - N/A
Consumer Confidence Rule
Consumer Confidence Report Complete Failure to Report
Consumer Confidence Rule
Returned to Compliance
What My Water Data Means
Water data isn't always easy to interpret, but by following the links on this page you should be able to have most of your questions answered. By clicking the name of a water contaminant or secondary substance you can learn about that specific substance. Ultimately this page should give you some insight towards learning if your water is safe, what water filter you should buy (if any), and how well your local water compares against other sources.
Sources
The origin of MyTapWater.org's water data is explained on our Data Sources page.
Why Is My Water Data Not More Recent?
The recency of the data for your ZIP code depends on the last your water source was tested, by a federal, state, or local agency. More information about the timing can be determined by learning about the dataset in question and seeing how often the EPA (other another governing body) mandated testing.